For a system with 301-1000 heads, how many spare heads are required on hand?

For a system with 301-1000 heads, how many spare heads are required on hand?

• A. 10
• B. 12
• C. 14
• D. 16

Answer: (B)

Having spare sprinkler heads on hand ensures replacements can be made quickly during maintenance or after head damage, without delaying protection. The number kept scales with system size. For a system with 301–1000 heads, the standard guideline calls for twelve spare heads. This quantity provides enough stock to cover typical replacement needs while avoiding excessive inventory. Switches or heads must match the installed type and temperature rating, and they should be kept in their original packaging in a clean, dry location, readily accessible when needed. Smaller systems use fewer spares, larger systems use more, so twelve is the appropriate balance for this range.

Having spare sprinkler heads on hand ensures replacements can be made quickly during maintenance or after head damage, without delaying protection. The number kept scales with system size. For a system with 301–1000 heads, the standard guideline calls for twelve spare heads. This quantity provides enough stock to cover typical replacement needs while avoiding excessive inventory. Switches or heads must match the installed type and temperature rating, and they should be kept in their original packaging in a clean, dry location, readily accessible when needed. Smaller systems use fewer spares, larger systems use more, so twelve is the appropriate balance for this range.